Improvement in thigl-cottplings



JJH.0RMSBY Thll Coupling Patented Sept. 13, 1870.

NAPETERS. PHTO-LITNOGRAPHER. WASHINGTON. D CA thtited' (s3/taire wat dimitir,

Letters Patent No. 107 ,404, dated September 13, 1870.

IMPROVEMENT IN THILL-COUPLING'S.

The Schedule referred Ato in these Letters Patent and making part o the same I, JUSTIN H. ORMSBY, of Dixon, in the county of Lee and State of Illinois, have invented certain Iniproveinents'in [Phill-Couplings, of which the following is a specification.

The object of my invention is topi-Ovide a thillcoupling for general use, which shall be strong and durable, and which shall have its parts so constructed, arranged, and joined'together, that it cannot become loose by wear, whereby the disagreeable rattling ot ordinary chill-couplings is electually prevented, as will be more fully hereafter set forth.

AIn the accompanying drawing- I Fignre'l represents a side view of -rny invention.

Figure 2 represents a vertical section from front to rear of tig. 1, on the line :c x.

General Description.

A. is an ordinary axle-clip, from'which extends an arm, a B is a shank-iron, upon which is formed the head b; this head is provided upon one side with a'conical projection orpivot, e, and upon the opposite side with a conical depression, g.

The arm a is made, also,"with a conical depression, f, corresponding toand fitting the projection e.

Upon the opposite side 'of -the said arm a is a depression, c, to receive the set-'s'crew E.

D is a clamp for securing and holding the parts iirmly together'. This ,clamp is made in form similar t-o a hollow parallelogram, andisfurnished at one of its ends with the conical projection ll, and .at the other end is perforated to admit the set-screw E.

The head b of the shank B isplaced against the side of the arm a, so that the conical projection upon the said shank-head shall t into the conical depression upon the .said arm. rlhe clampD is then passed over the above parts until the conical projection zlthereof its'into the conical depression of the shankhead1). The set-screw E is then tightened until the point thereof enters the depression e of the arm a., when the whole constitutes a strong and durable con plgt will be seen that as thesides ofthe arm a, shankheadb, and clamp D wear away, it will only be necessary to give an additional turn to the set-screw E to cause' the coupling to be as tight and complete as ever.

-The conical pivoting of the `joints renders it inipossible that any wear shalldestroy the joint, sothatit will rattle.

I make the arm a .ordinarily large enough so that there can be no motion between it and the ciampi); the object of this is to prevent the set-screw Etfrom workingloose.

I do not claim to be the inventor of conical pivots to prevent looseningv from wear, as I am well aware they have been extensively used in harvester pitmalls.

W'hat I do claim as new, and desire to secure by Let-ters Patent, is`

The thi'll-coupling above described, consisting of the arm a, shank-head b, andv clamp D, provided with a set-screw, E, when all are constructed and arranged as specified and shown, and for the purpose set forth. J. H. ORMSBY.

Witnesses:

J. W. MUNDAv, J. L. .Commit 

